At 22.14 hours on 29 October 1944 U-958 fired a spread of three T-3 torpedoes at a barge and a coastal patrol craft north of Osmussaar in the Gulf of Finland, heard a detonation after 2 minutes and 21 seconds but made no observations as the U-boat was forced to evade the escorts and escaped without damage after counting 42 depth charge explosions. The landing craft SB-2 was sunk during this attack while transporting troops and war material to Saarenmaa for the Moonsund Landing Operation.

Revisions

September 2015 by Rainer Kolbicz: The position where the wreck of SB-2 was discovered in 2014 indicates that the vessel must have been sunk in a torpedo attack by U-958 that had been reported as unsuccessful. The hit claimed by U-475 (Stoeffler) after firing a Gnat at an escort vessel at 16.25 hours on 31 October 1944 is not confirmed by Soviet reports.

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